Damage to the Substantia Nigra Causes a Decrease in the Neurotransmitter

question 69

Multiple Choice

Damage to the substantia nigra causes a decrease in the neurotransmitter dopamine. This causes a gradual, generalized increase in muscle tone, which is the main symptom of

• A) tetanus.
• B) Alzheimer disease.
• C) myasthenia gravis.
• D) rabies.
• E) Parkinson disease.

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Definitions:

Eicosanoids

Signaling molecules made from fatty acids, instrumental in inflammatory responses and other physiological functions.

Plasma Membrane

The two-layered lipid structure that acts as the cell's exterior limit, controlling the movement of materials into and out of the cell.

Denaturation

A process in which proteins lose their native shape and function due to external stress, such as heat or acidic conditions.

Protein

Protein is a macromolecule composed of amino acids linked by peptide bonds, essential for the structure, function, and regulation of the body's cells, tissues, and organs.